An paha' (o, pagkapaha') iyo an paghagad nin maiinom na pluwido, nagreresulta sa basikong instinct kan mga hayop na mag-inom. Saro iyan sa importanteng mekanismo na imbwelto an balanseng pluwido.[1] Minalataw iyan sa kawàran nin mga pluwido o sarong paglangkaw kan konsentrasyon kan osmolities, siring kan sodium. Kun magbagsak an bolyum kan hawak sa ibaba kan threshold o an konsentrasyon kan osmolite nagin halangkawon na marhay, an estruktura kan hutok nakakadetek nin pagbabago sa blood constituents asin minasignal nin paha.[2]

Thirst (1886), ni William-Adolphe Bouguereau

Toltolan baguhon

  1. Stanhewicz, Anna E.; Larry Kenney, W. (2015-08-19). "Determinants of water and sodium intake and output". Nutrition Reviews 73 (suppl 2): 73–82. doi:10.1093/nutrit/nuv033. ISSN 0029-6643. PMID 26290293. https://academic.oup.com/nutritionreviews/article/73/suppl_2/73/1930571. 
  2. McKinley, Michael J.; Denton, Derek A.; Ryan, Philip J.; Yao, Song T.; Stefanidis, Aneta; Oldfield, Brian J. (2019-03-14). "From sensory circumventricular organs to cerebral cortex: Neural pathways controlling thirst and hunger". Journal of Neuroendocrinology 31 (3): e12689. doi:10.1111/jne.12689. ISSN 0953-8194. PMID 30672620. https://academic.oup.com/nutritionreviews/article/73/suppl_2/73/1930571.